RT Journal Article SR Electronic T1 Another look at risk and reward in January and non–January Months JF The Journal of Portfolio Management FD Institutional Investor Journals SP 82 OP 83 DO 10.3905/jpm.1990.409290 VO 16 IS 4 A1 Eric C. Chang A1 J. Michael Pinegar YR 1990 UL https://pm-research.com/content/16/4/82.abstract AB